diff --git a/pylint/plugins/hass_enforce_type_hints.py b/pylint/plugins/hass_enforce_type_hints.py
index 58baeb6d1cd..bd208808366 100644
--- a/pylint/plugins/hass_enforce_type_hints.py
+++ b/pylint/plugins/hass_enforce_type_hints.py
@@ -138,6 +138,7 @@ _TEST_FIXTURES: dict[str, list[str] | str] = {
     "mock_bleak_scanner_start": "MagicMock",
     "mock_bluetooth": "None",
     "mock_bluetooth_adapters": "None",
+    "mock_conversation_agent": "MockAgent",
     "mock_device_tracker_conf": "list[Device]",
     "mock_get_source_ip": "_patch",
     "mock_hass_config": "None",
diff --git a/tests/components/conversation/conftest.py b/tests/components/conversation/conftest.py
index 4801e506460..6575ab2ac98 100644
--- a/tests/components/conversation/conftest.py
+++ b/tests/components/conversation/conftest.py
@@ -16,7 +16,7 @@ from tests.common import MockConfigEntry
 
 
 @pytest.fixture
-def mock_agent_support_all(hass: HomeAssistant):
+def mock_agent_support_all(hass: HomeAssistant) -> MockAgent:
     """Mock agent that supports all languages."""
     entry = MockConfigEntry(entry_id="mock-entry-support-all")
     entry.add_to_hass(hass)
diff --git a/tests/components/conversation/test_init.py b/tests/components/conversation/test_init.py
index e1e6683f142..415c80fffbc 100644
--- a/tests/components/conversation/test_init.py
+++ b/tests/components/conversation/test_init.py
@@ -24,7 +24,7 @@ from homeassistant.helpers import (
 )
 from homeassistant.setup import async_setup_component
 
-from . import expose_entity, expose_new
+from . import MockAgent, expose_entity, expose_new
 
 from tests.common import (
     MockConfigEntry,
@@ -94,7 +94,7 @@ async def test_http_processing_intent_target_ha_agent(
     init_components,
     hass_client: ClientSessionGenerator,
     hass_admin_user: MockUser,
-    mock_conversation_agent,
+    mock_conversation_agent: MockAgent,
     entity_registry: er.EntityRegistry,
     snapshot: SnapshotAssertion,
 ) -> None:
@@ -663,7 +663,7 @@ async def test_custom_agent(
     hass: HomeAssistant,
     hass_client: ClientSessionGenerator,
     hass_admin_user: MockUser,
-    mock_conversation_agent,
+    mock_conversation_agent: MockAgent,
     snapshot: SnapshotAssertion,
 ) -> None:
     """Test a custom conversation agent."""
@@ -1081,8 +1081,8 @@ async def test_agent_id_validator_invalid_agent(
 async def test_get_agent_list(
     hass: HomeAssistant,
     init_components,
-    mock_conversation_agent,
-    mock_agent_support_all,
+    mock_conversation_agent: MockAgent,
+    mock_agent_support_all: MockAgent,
     hass_ws_client: WebSocketGenerator,
     snapshot: SnapshotAssertion,
 ) -> None:
@@ -1139,7 +1139,7 @@ async def test_get_agent_list(
 async def test_get_agent_info(
     hass: HomeAssistant,
     init_components,
-    mock_conversation_agent,
+    mock_conversation_agent: MockAgent,
     snapshot: SnapshotAssertion,
 ) -> None:
     """Test get agent info."""
diff --git a/tests/components/mobile_app/test_webhook.py b/tests/components/mobile_app/test_webhook.py
index a9346e3728c..9f521cafd38 100644
--- a/tests/components/mobile_app/test_webhook.py
+++ b/tests/components/mobile_app/test_webhook.py
@@ -24,6 +24,7 @@ from homeassistant.setup import async_setup_component
 from .const import CALL_SERVICE, FIRE_EVENT, REGISTER_CLEARTEXT, RENDER_TEMPLATE, UPDATE
 
 from tests.common import async_capture_events, async_mock_service
+from tests.components.conversation import MockAgent
 
 
 @pytest.fixture
@@ -1023,7 +1024,7 @@ async def test_webhook_handle_conversation_process(
     homeassistant,
     create_registrations,
     webhook_client,
-    mock_conversation_agent,
+    mock_conversation_agent: MockAgent,
 ) -> None:
     """Test that we can converse."""
     webhook_client.server.app.router._frozen = False